Acquisitions (Schedule Of Intangible Assets Acquired) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 25, 2017	Mar. 26, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 21,394	$ 11,678
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	14 years
Franchise Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		7,100
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 11,999	689
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Favorable Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 6,440	1,889
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	14 years
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 2,955	$ 2,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	17 years
Fiscal 2016 Acquisitions [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Fiscal 2016 Acquisitions [Member] | Franchise Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Fiscal 2016 Acquisitions [Member] | Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	7 years
Fiscal 2016 Acquisitions [Member] | Favorable Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Fiscal 2016 Acquisitions [Member] | Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	15 years